Many tuners have attempted single turbo setups on the BMW N54 direct injected turbo 6. Up to this point, nobody has been able to come to market with a reliable solution. HPF announced they intended to provide a single turbo kit for the N54 last year. They seem to be progressing further than anyone else and making it into a reality. Expect dyno numbers to come soon but for now the details we have are that this kit will be able to run any Precision T4 Turbo from a 67 to a 76.

Additionally, HPF is aiming for a starting price of $5950 which will include the turbo manifold, journal bearing Precision turbo, wastegate, oil scavenge pump and hardware, downpipe, intake charge pipe, motor mount, motor mount relocation kit, VBrace, fittings, couplers, etc. This will really shift the N54 turbo upgrade options and be incredibly competitive. After this is released expect a Stage II with fueling upgrade but that is further down the line.

are there any driveability advantages in a single turbo setup?
I see only negative points in such a setup...
Why not slightly increas both turbos instead of one big (bin lag) turbo setup. For quarter mile purpose maybe....?

So stage 1 includes everything listed minus the exhaust? If so not a typical over priced solution after all.
Turbo mani intake fmic cold and hot pipes dp along with all fitings to make it work? Does the tune come with it? Cause I would obviously option out of that and go with a different solution.

I don't see the point of stage 1 if a RB turbo setup gives a better area under the curve... We need to be able to support more power on pump for it to be worth spending this kind of money. Here's to hoping that this will be able to match or exceed the RB turbo numbers....

I don't see the point of stage 1 if a RB turbo setup gives a better area under the curve... We need to be able to support more power on pump for it to be worth spending this kind of money. Here's to hoping that this will be able to match or exceed the RB turbo numbers....

Pump for pump this upgrade should easily outperform rbs or any other stock turbo upgrade.

They seem to be progressing further than anyone else and making it into a reality

I hope big things for this, but i think its unfair to say further than anyone else at this point. AR did get it running, did get it on the road, did dyno it, but then that was it. so not much further for HPF to go to go further, but i would have chosen more accurate wording

Originally Posted by Sorena

So LM wasn't wrong about the Shiv's part.

no i wasnt. what i dont like is how it was "not true" and then it was "true"

Originally Posted by Laloosh

Pump for pump this upgrade should easily outperform rbs or any other stock turbo upgrade.

as long as a piggy is used for tuning, i dont see how. could you elaborate?

Common sense and experience. Spinning the $#@! out of little turbos causes massive heat and low efficiency. Attaining the same boost pressure with a turbo that is as efficient as its going to get will not only provide more flow but cooler efficient flow. I tapped out my old car on the stock turbo with meth at a whopping 32x whp running aggressive. On a ig gt35 running spring pressure and lower boost it put down 35x as a baseline on pump gas. Search around on how cars destroy pump gas numbers with bigger turbos. On 6267 running say 17 psi I see an easy 450 pump and the limit being 19-20 for pump. And btw a piggy is not the way to go for a big single lol. Atr and manually rewriting load tables will do wonders. Look at the ms3 Cobb guys compared to piggy guys all running big setups.... Actually it will be hard to find a piggy ms3 let alone one with a bt on it lol

I wonder if hpf or shiv will release details on their turbo specs. Once that is know I can give u guys a better prediction

Common sense and experience. Spinning the $#@! out of little turbos causes massive heat and low efficiency. Attaining the same boost pressure with a turbo that is as efficient as its going to get will not only provide more flow but cooler efficient flow. I tapped out my old car on the stock turbo with meth at a whopping 32x whp running aggressive. On a ig gt35 running spring pressure and lower boost it put down 35x as a baseline on pump gas. Search around on how cars destroy pump gas numbers with bigger turbos. On 6267 running say 17 psi I see an easy 450 pump and the limit being 19-20 for pump. And btw a piggy is not the way to go for a big single lol. Atr and manually rewriting load tables will do wonders. Look at the ms3 Cobb guys compared to piggy guys all running big setups.... Actually it will be hard to find a piggy ms3 let alone one with a bt on it lol

I wonder if hpf or shiv will release details on their turbo specs. Once that is know I can give u guys a better prediction

One part of the big turbo benefit is due to better efficiency and the other part because of more flow (air + fuel). Since stage 1 has limited fueling, only the efficiency part brings more power to the table at this stage. More fuel will bring more power later on, i.e. at stage 2.

Common sense and experience. Spinning the $#@! out of little turbos causes massive heat and low efficiency. Attaining the same boost pressure with a turbo that is as efficient as its going to get will not only provide more flow but cooler efficient flow. I tapped out my old car on the stock turbo with meth at a whopping 32x whp running aggressive. On a ig gt35 running spring pressure and lower boost it put down 35x as a baseline on pump gas. Search around on how cars destroy pump gas numbers with bigger turbos. On 6267 running say 17 psi I see an easy 450 pump and the limit being 19-20 for pump. And btw a piggy is not the way to go for a big single lol. Atr and manually rewriting load tables will do wonders. Look at the ms3 Cobb guys compared to piggy guys all running big setups.... Actually it will be hard to find a piggy ms3 let alone one with a bt on it lol

I wonder if hpf or shiv will release details on their turbo specs. Once that is know I can give u guys a better prediction

all good points. i dont think it will be a huge variance on pump alone, as long as a piggy is used though, that was my main point. excited to see how it all plays out though

I don't see the point of stage 1 if a RB turbo setup gives a better area under the curve... We need to be able to support more power on pump for it to be worth spending this kind of money. Here's to hoping that this will be able to match or exceed the RB turbo numbers....

Area under the curve will be nice for daily driving but if this has a much higher peak it will be stronger up top.

I hope big things for this, but i think its unfair to say further than anyone else at this point. AR did get it running, did get it on the road, did dyno it, but then that was it. so not much further for HPF to go to go further, but i would have chosen more accurate wording

I think it is accurate considering that they have listed the kit features, pricing, and will have public dyno numbers posted soon. That in my mind pushes it further and is accurate is it not?

Common sense and experience. Spinning the $#@! out of little turbos causes massive heat and low efficiency. Attaining the same boost pressure with a turbo that is as efficient as its going to get will not only provide more flow but cooler efficient flow